Category: Michael Holick

Vitamin D Blog: Nutrient or Hormone?

MedPage Today Michael Holick, School of Medicine Few people view their vitamin D supplement as hormone replacement therapy, but that’s exactly what it is, experts told MedPage Today… Expert quote: “By definition, vitamin D is a hormone. The body synthesizes it after sun exposure, and it’s activated by the liver and kidneys. That activated form again acts […]

The Health Benefits of Sunshine

Men’s Journal Michael Holick, School of Medicine For decades we’ve been warned to lather on sunscreen or pay the health price. The American Academy of Dermatology categorizes the sun’s rays as a carcinogen, saying that no matter how few minutes you spend outside, there is “no scientifically proven safe threshold of sun ex­posure.”… Expert quote: […]